$(function(){
    		$('.sidebar-list').on('click','dt',function(){
			var target=$(this).parents('dl');
			var dt=$(this);
			var tab = target.attr('data-tab');
			target.addClass('selected').siblings('.selected').toggleClass('selected');
			dt.parents('dl').siblings('dl').find('dt').css("color","#666666");
			dt.css("color","#e20d00");
			var target=$(".sidebar-list .tab[data-content="+tab+"]");
			if(!target.hasClass('selected')){
				var content = $(".helpcenter_main .content[data-content="+tab+"]");
				var seletedContent = content.siblings('.selected');
				seletedContent.fadeOut(10,function(){
							content.find('div').css('display','block');
							seletedContent.toggleClass('selected');
							content.fadeIn(10,function(){
							content.toggleClass('selected');
							});
				})
			}
		});
    	})